Rubber roller polishing machine



Nov. 22, 1932. T. L. EGNOR RUBBER ROLLER POLISHING MACHINE Filed Sept.5. 1930 3 Sheets-Sheet f l I INYENTOR. T eo do reyn0r A TTORNE YS.

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3 Sheets-Sheet T. L. EGNOR Filed sept. 5. 1930 RUBBER ROLLER PoLsHINGMACHINE )NIJ I' I mmvmmmm 'l rmrmmawmmnmu l' I,

Nov. 22, 1932.

, INVENTOR. 272 eo abreA .Zynor ATTORNEYS.

Nov. 22, 1932. T. L. EGNOR RUBBER ROLLER PoLlsHING MACHINE vom N kN n@mm m. n 9b L A e wr Num W @bld 0 @mw M /nY Pdiented Nov. 1932 irimozione r.. nanos, or nILLsmn, v:nrw muur Burana nonna rmsnme oFl-IcApplication med September 5, 1980. Serial No.'479,864. Y

The present invention relates to Van improved roller polishing machine,and more particularly to a machine for polishing composition rollerssuch, for instance, as are used for inking purposes in printing presses,said polishing operations being performed'after the surface of theroller has been ground. An object'of the invention is to provide such aymachine in which rollers of various lenvths l0 and diameters ma bepolished and whlch will impart a uniformly polished surface thereto.Another object is to provide a {nachine which will be automatic inoperation, the carriage of the polishing element being automatically fedfrom one end of the roller to the other as the roller is rotated.

A further object is to provide an improved polishing element, which will'engage the roller under any desired tension, and 1n which the polishingsurface may be readilyl renewed as it becomes worn. n

fWith the aboveand other objects in view an embodiment of the inventionis shown in the accompanying drawings and this embodiment will behereinafter more fully described with reference thereto, and theinvention will he finally pointed out in the claims.'

ln' the drawings: v i Fig. l is a front elevation of the roiler poleishing machine, according to the present ein bodin'ient of theinvention.

F ig. 2 is an end v iew thereof.

Fig. 3 is on enlarged end view of one of the adjustable roller supports,the adjacent portion of the frame being shown in crosssection.

Fig. e is a detail front view ci one or the guide rail supports.

Fig. 5 is e side view thereof, showing .the

49 rails in cross-section.

Fig..6 is an enlarged front elevation oi. the polishing elementcarriage, and showing the adjacent supporting and feeding parte of r themachine.

. ji Fig. 7 is a plan view, with certain parte broken away, of thepolishing element.

Fig. 8 is a vertical sectional view,'en=a larged, taken along the line88 of Fig. 1.

Fig. 9 is a detail view oi the feed clutch mechanism for the polishingelement can Similar reference characters indicate oorl responding partsthroughout the several dgures of the drawings.

` Referring to the drawings, the machine, ao.

cording to the present embodiment oif the in`1 vention comprises a pairof spaced table suppor-ts 10 and 11 supporting the ends or? thepolishing mechanism, the table ii carrying at its under side a, drivingmotor l2 and a worm gearing 13 driven thereby. The shaft of the motor isprovided with e pulley ld for driving the worlrcarrying spindle,presently to' be described, and the worin gearing is provided with asprocket gee-.r l5 for driv ing the feed mechanism.

Upon the table supports 10 and il there are respectively mountedstandards ld ond` 17, having iianges i8 at their front and roer edgesand between these supports a pair of longitudinal angle iron rails 19and 20 are mounted, being secured to the supports hy bolts 21, as shownin Fig. 3. The rails 19 and 20 form a `longitudinal channel within whichthe supports for the work carrying spindle are adjustably mounted. Thesesup-- ports comprise a reiatively long base 22.', slidably engaged withthe rails 19 and 20, en upright portion 23 having a piller block 24mounted in an o penin 25 in its upper portion, and a locking pate 26secured to the rearward side of the portion 23 end pro'ecting downwardlyat the 'rearward side ed the rail 20 where it is provided with a setscrew 27 for binding against the rail and securing the position of vthesupport.

The ends ofthe spindle 28 carrying the roll 29, to be polished, aremounted in the pillar blocks 24 of the supports at each endo At .oneendthe spindle is connected by chuclr30 and a longitudinally adfustable coupling 31 to a counter drive sha 32 mountm edinv bearings 33 and '34.supported upon the table support 11, said shaft being provided betweenthe bearings with' a pulley 35 ccnnected by a belt-36 to the drivepulley 14 of the motor 12. With this arrangement rolls of cesses in theforward sides of said standards,

rollers 55 and a forwardly disposed cam carryinff rail 43 also securedat its ends in suitable recesses in the forward sides of said standardsand arranged between the rails 40 and 41" The standards 37 and 38 alsorespectivel i carry journal bearings 44 and 45, in wliic are journaledshafts 46 and 47 having sprocket gears 48 and 49 secured upon theirforward ends, and over which an endless feed chain 5() passes, the upperportion of the chain between the rollers being supported on the rail 40while the lower portion moves in the slot between the rails 41 and 42,being supported on the rail 42. For the pur yose of continuously drivingthe sprocket c ain in the direction indicatedby the arrows a gear 51 issecured upon the rearward end of the shaft 47, and is driven by asprocket chain 52 extending from the sprocket gear 15 of the wormgearing 13. Every other link of the sprocket chain is provided with anoutwardly projected extension 53, and which is adapted to cooperate withthe carriage of the polishing mechanism, and as will Y presently morefully appear. l i

The polishing element carriage frame 54 is vertica ly disposed and isprovided at its upper portion adjacent its ends with fianged and 56which ride upon the upper side of the rail 39, another ianged roller 57vbeing provided at the mid-portion of the frame which engages the lowerside of said rail 39.

Upon the rail 43 are adjustably mounted two flanged cam lates 58 and 59secured 1n adjusted position set-screws 60 and 61, and respectivelyprovi( ed with inclined cam surfaces 62 and 63, the surface 62 facingdownwardly and the surface 63 facing their inclination being in the samerection. These cam surfaces are disposed in relation to be engaged by aroller 64 carried upon a yoke' 65 slidably mounted on a verticallydisposed rod 66 that is slidably mounted 1n.

bearings 67 and 68 formed as a part of the carriage frame. A secondroller 69 is secured at the back of the yoke and rides in a verticallydisposed slot 70 of the carriage frame, serving to hold the yoke inalignment and prevent it from turning upon the rod 66.

The yoke is provided upon each end portion u wardly (E 1 with aprojection 71, the upper proj ection be# ing arranged to engage tie: camsurface 72 of a latch 73 pivotally connected at 74 to the carriageframe, andprovided Vwith a spring 7 5 which normally holds it inengagement with a roller support 76 secured u on the.

vertically movable rod66. The rol er support 76 carries a roller 77adapted for engagement with the extensions 53 of the upper traverse ofthe feed chain as said roller is inoved T he, roller supportis providedwith a rearwardly projected end portion 78 that bears upon the face ofthe'` carriage frame to preventthe roller support and rod 66 fromturning. The latch 73 is further provided with a detcnt tooth 79 for enagement with the top edge portion of the ro ler support when the latteris in its lowered position, as indicated in Figs. 1, 68 and 9.

The lower projection 71 of the s oke yis adapted to engage the camsurface. 2 of a lower latch 73 disposed in reverse relation to theuppei'llatch and in lower roller support 76, the roller 77 of whichisfadapted to engage the extensions of the lower traverse of the feedchain in the upper position of the yoke, as indicated in Fig. 10.

Compression springs 80 are respectively positioned upon the rod 66between each of the roller supports and theyoke 61 and upon rcleasebythe latches pro'ect the roller supports in one-direction or t e other.

The operation follows. During feed of the carriage to the right, Fig. 6,the upper roller 77 is in engagement with the extensions of the feedchain and the yoke 65 is in its lowered position. As the roller 65 ofthe yoke comes into engagement with the cam surfaces 63 the yoke isforced upwardly on the rod 66, compressing the upper spring 80, and asthe upward movement of the yoke continues the upper projection 71engages the cam surface 72 of the latch 73 swinging it outwardly torelease the detent tooth 79 from the up er roller support, whereupon thecompressedp upper spring 80 projects the rod 66 and the upper and lowerroller supports carried there y upwardly, thus disengagin g the upperroller 77 from the upper right-feed traverse of the feed chain andengaging the lower roller 77 with the lower left-feed traverse. The rodand roller supports are retained in this upper position, Fig. 10,through en agement of the tooth 79 of the lower latch 3 with the lower`roller support. At the end of the movement to the left the roller 64engages the cam surface 62, compressing the lower spring 80 andreleasing the lower latch to shift the parts to the lower or right-feedosition, the upper roller 77 being engaged with the upper traverse ofthe feed chain, disengaged from the lower traverse. Obviously the pointsof reversal of the feed may into the path of said extensions.x

the same relation to a` of the feed mechanism is as l and the lowerroller 77 being zontall arran ed roller 81 above the roller Y 57, anlower orizontally arranged rollers 82 and 83 below the rollers 55 and56, and

which engage the front surface of the rail 1 39 for the purpose ofequalizing the support of the frame and reducing vibration.

The polishing element is carried by a frame comprising a pair of sideplates 84 connected by transverse bars 85, 86 and 87, and mounted forswinging movement upon a shaft 88 journaled in bearings89 and 9()lformed uponfthe upper' portion of the .car-

.riage frameb The bars 85 and 86"are arranged adjacent the inner andouter ends of the frame at each end of cut-outs 91 in the side plates,and have connected thereto the ends of a series of cushioning coil-sprin92,

which back up a pad 93 having its re uced 'inner and outer ends securedto the under sides oi the bars 85 and 86 by means of re-v taining strips94 and 95 screwed to said bars. This pad it Will be'observed, rests uponthe roller to be polished, and for the purpose of imparting the desiredpressure thereto a rod 96 is pivotally mounted upon a shaft 97 securedbetween the side plates, a weight 98 being removably secured thereon.Obviously diderent sized weights may be readily secured u on ther-od 96to vary the pressure.

An a rasive polishing strip 99 is carried across the face of the pad 93,and for the purpose of readily renewing this strip as it becomes wornthe same is supplied from a roll 10G mounted on a shaft 101 su ported inthe freine, said strip being *carrie over a roller 102 adjacent the bar85 and secured at its end between the bar 87 and a retaining bar 103secured by Wing nuts 1041-. By loosening the Wing nuts the strip may bepulled forwardly to bring a new surface into place, the surplus beingtorn oli. order to prevent-loosening of the strip a tension device 105is provided on the shaft lOl, which normally holds the roll againstrotation, and which may be released when it isvdesired to renew thestrip.

By the use of variable speed motor for operating the machine, the speedof the roller 29 and the travel of' the connected feed chain 50 may beautomatically changed in a like manner, and in instances where itisdesirable to change the speed oir' the roller with respect to the traveloi the chain, it can be accomplished bv substituting aA larger 'orsmaller sprocket iior the sprocket l5 and the sprocket on the shaft i7driven thereby.

I have illustrated-.and described a preferred and satisfactoryembodiment of the invention, but it will be obvious that changes may hemade therein, within the spirit and *3 scope thereof, las ldefined inthe appended claims.

" Having thus described my invention what I- claim and desire toVsecure-'hy Letters Patent is 1. Ina machine forl polishing rollers aroller carrying spindle, a carriage movable' longitudnall of the.rollercarried by said spindle, a po ishing element carried by and movable withsaid carria e and comprising.

a frameincluding space -apart side'plates hinged to sadcarriage,transverse bars conneet-ing said plates, a relatively flat pad hav-`.ing its opposite edge portions secured to said transverse bars, a rollofpolishing material carried by the frame, a ortion o said materialextending across-t c face -of thepadfor contact'- with said roller,and-an adjustable platebeneath which said material 1s into rollerengaging relation.

2. In a machine for polishing rollers a roller carrying spindle, acarriage movable longitudinally of theroller carried by said spindle, apolishing element carried by and movable with. said-carriage andcomprising a frame hinged to said carriage and extending above saidroller, a relatively flat ad drawn from said roll to bring'new portionshavinff its opposite edge portionssecure to space -apart members oftheir-ame, .a series of springs extended across the underside'othe padto stifl'en and support the same, a, roll of polishing material.carried-by the frame', a portion of said material extendin l across theface of the pad for contact wit said roller, and an adjustable latebeneath which said material is drawn rom said roll to bring newportionsinto roller engaging relation.

3. A machine for .polishing rollers comprising a. frame including alongitudinal uide rail and s.A camcarrying rail, -carns ad- }ustablymounted onl the cam rail, a carriage l for the polishing element.including in part a vertical plate having a guide slot thereln, anendless feed chain having radial exten sions, a vertically movable rodmounted on the frame plate, a yoke .slidably mounted upon the rod 'andcarrying oppositely projected rollers one to be guided in the slot-andthe other to be engaged and operatedl by the cams, springs to normallyretain the yoke in an intermediate position, a roller support slidablymounted ou each end portion ofV the rod in engagement with the saidsprings, and each carrying a roller adapted to engage the beforementioned radial extensions of the endless feed chain, spring actuatedlatches position and then in another for engagement by the extensions ofthe chain and whereby.

the carriage may be automatically moved fromy one end of the machineIframe to the other. 4. A machine for polishing rollers comprising aframe including a longitudinal uide rail and a cam-carrying rail, camsad- -]ustably mounted on the cam rail, a roller carrying spindle, acarriage, a polishing element carried thereby including in' art avertical plate-havinga guide slot't erein, an endless feed chain, avertically movable rod mounted on the plate, springs mounted upon therod, a roller-support mounted on each end portion of the rod inengagement with the said springs, a roller on each support adapted toengage the before mentioned endmovement of said latches at predeterminedpoints.

5. A machine for polishing rollers comprising a .frame includinglongitudinal guide rail feed chain supporting rails, and a vcam-carryingrail, cams adjustably mounted onthe -cam rail, a roller-carryingspindle, a polishlria'ge to the lower transverse including a pair ofreleasable latches mounted on the carriage for respectively retainingsaid vertically movable means in one position or the other, a pair ofspring means' adapted to respectively impart movement to; said verticallmovable means upon release by one or the ot er of said releasablelatches, means movable on said vertically movable means adapted uponmovement in one direction tov first compress one of said spring meansand'thereupon release one ofsaid releasable means and upon move- -mentin the opposite direction to first com press said other spring means andthereupon release: said other releasable means, and

means for causing the movement of said last y named means atpredetermined points.I

Signed, at Bridgeport in` the county of Fairfield and State ofConnecticut this 3rd day of Sept. A. D. 1930.

' ing element, a'carriage for the polishing elel ment having a verticalslot, an endless feed chain nl ounted to oplerate beside said chainsupportmg rail and aving engaging means,

`a yoke slidably mounted uponthel rod and carrying oppositely projectedrolls one to be gulded in the vertical slot and the other to be operatedby the cams, springs to normally retain the yoke in an intermediateposition, a

roller supportxnounted on each end portion of the rod in engagement withthe said springs, and each carrying a roller adapted to be engaged bythe before mentioned endless chain, spring actuated latches mounted,upon the carriage adapted to engage the said'fioller supports andalternately hold them, the spring and yoke, in one position and then inanother for engagement bythe chain and whereby the carriage may beautomatically moved from one end of the machine frame to the other.

6. A machine for polishing rollers comprising a frame including alongitudinal supporting guide rail feed chain supporting rails and acam-carrying rail, a roller-carryling spindle, a polishing'element, acarriage for said polishing element having wheels to engage the guiderail, and endless kfeed chain having recesses, vertically movable meanscarried by said carriage adapted in one position to operatively connectsaid carriage to the upper transverse of said chain and in anotherposition to operatively connect said car- THEoDoRE L. EGNOR.

